Le Mont Saint Michel
Mont-Saint-Michel (; Norman language, Norman: ''Mont Saint Miché''; ) is a tidal island and mainland Communes of France, commune in Normandy, France. The island lies approximately off France's north-western coast, at the mouth of the Couesnon, Couesnon River near Avranches and is in area. The mainland part of the commune is in area so that the total surface of the commune is . , the island has a #Population, population of 29.Téléchargement du fichier d'ensemble des populations légales en 2019
Institut national de la statistique et des études économiques, INSEE The commune's position—on an island just a few hundred metres from land—made it accessible at low tide to the many pilgrims to its Mont-Saint-Michel Abbey, abbey, and defensible as the i ...
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Communes Of France
A () is a level of administrative divisions of France, administrative division in the France, French Republic. French are analogous to civil townships and incorporated municipality, municipalities in Canada and the United States; ' in Germany; ' in Italy; ' in Spain; or civil parishes in the United Kingdom. are based on historical geographic communities or villages and are vested with significant powers to manage the populations and land of the geographic area covered. The are the fourth-level administrative divisions of France. vary widely in size and area, from large sprawling cities with millions of inhabitants like Paris, to small hamlet (place), hamlets with only a handful of inhabitants. typically are based on pre-existing villages and facilitate local governance. All have names, but not all named geographic areas or groups of people residing together are ( or ), the difference residing in the lack of administrative powers. Except for the Municipal arrondissem ...
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World Heritage Site
World Heritage Sites are landmarks and areas with legal protection under an treaty, international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritage around the world considered to be of outstanding value to humanity". To be selected, a World Heritage Site is nominated by its host country and determined by the UNESCO's World Heritage Committee to be a unique landmark which is geographically and historically identifiable, having a special cultural or physical significance, and to be under a sufficient system of legal protection. World Heritage Sites might be ancient ruins or historical structures, buildings, cities, deserts, forests, islands, lakes, monuments, mountains or wilderness areas, and others. A World Heritage Site may signify a remarkable accomplishment of humankind and serve as evidence of humanity's intellectual history on the planet, or it might be a place of grea ...
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Period (geology)
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks). It is used primarily by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists) to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardised international units of geological time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precisely ...
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Cambrian
The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovician Period 486.85 Ma. Most of the continents lay in the southern hemisphere surrounded by the vast Panthalassa Ocean. The assembly of Gondwana during the Ediacaran and early Cambrian led to the development of new convergent plate boundaries and continental-margin arc magmatism along its margins that helped drive up global temperatures. Laurentia lay across the equator, separated from Gondwana by the opening Iapetus Ocean. The Cambrian marked a profound change in life on Earth; prior to the Period, the majority of living organisms were small, unicellular and poorly preserved. Complex, multicellular organisms gradually became more common during the Ediacaran, but it was not until the Cambrian that fossil diversity seems to rapidly ...
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Magma
Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma (sometimes colloquially but incorrectly referred to as ''lava'') is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. Besides molten rock, magma may also contain suspended crystals and volcanic gas, gas bubbles. Magma is produced by melting of the mantle (geology), mantle or the Crust (geology), crust in various tectonics, tectonic settings, which on Earth include subduction zones, continental rift (geology), rift zones, mid-ocean ridges and Hotspot (geology), hotspots. Mantle and crustal melts migrate upwards through the crust where they are thought to be stored in magma chambers or trans-crustal crystal mush, crystal-rich mush zones. During magma's storage in the crust, its composition may be modified by Fractional crystallization (geology), fractional crystallization, contaminati ...
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Intrusion
In geology, an igneous intrusion (or intrusive body or simply intrusion) is a body of intrusive igneous rock that forms by crystallization of magma slowly cooling below the surface of the Earth. Intrusions have a wide variety of forms and compositions, illustrated by examples like the Palisades Sill of New York and New Jersey; the Henry Mountains of Utah; the Bushveld Igneous Complex of South Africa; Shiprock in New Mexico; the Ardnamurchan intrusion in Scotland; and the Sierra Nevada Batholith of California. Because the solid country rock into which magma intrudes is an excellent insulator, cooling of the magma is extremely slow, and intrusive igneous rock is coarse-grained ( phaneritic). Intrusive igneous rocks are classified separately from extrusive igneous rocks, generally on the basis of their mineral content. The relative amounts of quartz, alkali feldspar, plagioclase, and feldspathoid is particularly important in classifying intrusive igneous rocks. Intrusio ...
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Leucogranite
Leucogranite is a light-colored, granitic, igneous rock containing almost no dark minerals. Leucogranites have been reported from a variety of orogenies involving continental collisions. Examples include the Black Hills (Trans-Hudson orogeny of Proterozoic age),Peter I. Nabelek and Mian Liu, ''Petrologic and thermal constraints on the origin of leucogranites in collisional orogens,'' Transactions of the Royal Society of Edinburgh: Earth Sciences, 95, 73–85, 2004
the Blue Ridge
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Tombelaine
Tombelaine () is a small tidal island off the coast of Normandy in France. It lies a few kilometres north of Mont Saint-Michel. At low tide, the island can be reached on foot (with a guide) from the coast of Cotentin, to the northeast, and from Mont Saint-Michel. The granite island lies just to the south of the course of the Sélune river, which has to be forded to access the island from Cotentin. It is by , and high. Administratively, it is in the commune of Genêts. Name According to one popular etymology, folk etymology, the name is a Contraction (grammar), contraction of “the tomb of Hélène”, referring to a supposed daughter of Hoel, King Hoël buried on the rock. The name could also come from ''tumulus belenis'' (“tumulus of Belenos”, a Celtic nations, Celtic god), or from the Celtic languages, Celtic words meaning “the little mountain”, in comparison to Mont Saint-Michel, once called ''Mont Tombe''. History In the 11th century, two monks from Mont ...
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Mont-Dol
Mont-Dol (; ; Gallo: ''Mont-Dou'') is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. Population Inhabitants of Mont-Dol are called ''Mont-Dolois'' in French. See also *Communes of the Ille-et-Vilaine department The following is a list of the 332 communes of the Ille-et-Vilaine department of France. The communes cooperate in the following intercommunalities (as of 2025):

Lillemer
Lillemer (; ) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France. As of 2019, the population was 367. Population Inhabitants of Lillemer are called in French ''lillemérois'' or ''lillemériens''. See also *Communes of the Ille-et-Vilaine department The following is a list of the 332 communes of the Ille-et-Vilaine department of France. The communes cooperate in the following intercommunalities (as of 2025):

Granite
Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dike (geology), dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or ''granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF diagram, QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) conta ...
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Outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth and other terrestrial planets. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial deposits are covered by soil and vegetation and cannot be seen or examined closely. However, in places where the overlying cover is removed through erosion or tectonic uplift, the rock may be exposed, or ''crop out''. Such exposure will happen most frequently in areas where erosion is rapid and exceeds the weathering rate such as on steep hillsides, mountain ridges and tops, river banks, and tectonically active areas. In Finland, glacial erosion during the last glacial maximum (ca. 11000 BC), followed by scouring by sea waves, followed by isostatic uplift has produced many smooth coastal and littoral outcrops. Bedrock and superficial deposits may also be exposed at the Earth's surface due to human exca ...
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